Dear users,

there have been some reports of darktable crashing at startup on Ubuntu 
13.10 systems equipped with AMD devices. This is valid for darktable 
1.2.x as well as 1.4.rc1.

The root cause seems to be a bug in the OpenCL driver which leads to a 
crash when compiling one of the OpenCL sources at runtime. Affected is 
driver version 13.10.10.

If this happens to you there are two options. As a short-term solution 
you can run darktable without OpenCL by calling it with command line 
parameter --disable-opencl.

An even better solution is to upgrade your AMD OpenCL driver. Visit the 
AMD site for a newer version or follow the instructions of your 
distribution. Driver version number 13.25 is reported to work well.

Ulrich

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